/* Remote target communications for the Macraigor Systems BDM Wiggler
- talking to a Motorola PPC 505.
- Copyright 1996, 1997 Free Software Foundation, Inc.
+ talking to a Motorola PPC 8xx ADS board
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "bfd.h"
#include "symfile.h"
#include "target.h"
-#include "wait.h"
#include "gdbcmd.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include <sys/types.h>
-#include <signal.h>
#include "serial.h"
#include "ocd.h"
+#include "ppc-tdep.h"
+#include "regcache.h"
-static void bdm_ppc_open PARAMS ((char *name, int from_tty));
+static void bdm_ppc_open (char *name, int from_tty);
-static int bdm_ppc_wait PARAMS ((int pid,
- struct target_waitstatus *target_status));
+static ptid_t bdm_ppc_wait (ptid_t ptid,
+ struct target_waitstatus *target_status);
-static void bdm_ppc_fetch_registers PARAMS ((int regno));
+static void bdm_ppc_fetch_registers (int regno);
-static void bdm_ppc_store_registers PARAMS ((int regno));
+static void bdm_ppc_store_registers (int regno);
extern struct target_ops bdm_ppc_ops; /* Forward decl */
\f
+/*#define BDM_NUM_REGS 71 */
+#define BDM_NUM_REGS 24
+
+#define BDM_REGMAP \
+ 2048, 2049, 2050, 2051, 2052, 2053, 2054, 2055, /* r0-r7 */ \
+ 2056, 2057, 2058, 2059, 2060, 2061, 2062, 2063, /* r8-r15 */ \
+ 2064, 2065, 2066, 2067, 2068, 2069, 2070, 2071, /* r16-r23 */ \
+ 2072, 2073, 2074, 2075, 2076, 2077, 2078, 2079, /* r24-r31 */ \
+\
+ 2080, 2082, 2084, 2086, 2088, 2090, 2092, 2094, /* fp0->fp8 */ \
+ 2096, 2098, 2100, 2102, 2104, 2106, 2108, 2110, /* fp0->fp8 */ \
+ 2112, 2114, 2116, 2118, 2120, 2122, 2124, 2126, /* fp0->fp8 */ \
+ 2128, 2130, 2132, 2134, 2136, 2138, 2140, 2142, /* fp0->fp8 */ \
+\
+ 26, /* pc (SRR0 (SPR 26)) */ \
+ 2146, /* ps (MSR) */ \
+ 2144, /* cnd (CR) */ \
+ 8, /* lr (SPR 8) */ \
+ 9, /* cnt (CTR (SPR 9)) */ \
+ 1, /* xer (SPR 1) */ \
+ 0, /* mq (SPR 0) */
+\f
+
+char nowatchdog[4] =
+{0xff, 0xff, 0xff, 0x88};
+
/* Open a connection to a remote debugger.
NAME is the filename used for communication. */
static void
-bdm_ppc_open (name, from_tty)
- char *name;
- int from_tty;
+bdm_ppc_open (char *name, int from_tty)
{
- wiggler_open (name, from_tty, WIGGLER_TARGET_MOTO_PPC, &bdm_ppc_ops);
+ CORE_ADDR watchdogaddr = 0xff000004;
+
+ ocd_open (name, from_tty, OCD_TARGET_MOTO_PPC, &bdm_ppc_ops);
+
+ /* We want interrupts to drop us into debugging mode. */
+ /* Modify the DER register to accomplish this. */
+ ocd_write_bdm_register (149, 0x20024000);
+
+ /* Disable watchdog timer on the board */
+ ocd_write_bytes (watchdogaddr, nowatchdog, 4);
}
/* Wait until the remote machine stops, then return,
Returns "pid" (though it's not clear what, if anything, that
means in the case of this target). */
-static int
-bdm_ppc_wait (pid, target_status)
- int pid;
- struct target_waitstatus *target_status;
+static ptid_t
+bdm_ppc_wait (ptid_t ptid, struct target_waitstatus *target_status)
{
int stop_reason;
target_status->kind = TARGET_WAITKIND_STOPPED;
- stop_reason = wiggler_wait ();
+ stop_reason = ocd_wait ();
if (stop_reason)
{
target_status->value.sig = TARGET_SIGNAL_INT;
- return inferior_pid;
+ return inferior_ptid;
}
- target_status->value.sig = TARGET_SIGNAL_TRAP; /* XXX for now */
+ target_status->value.sig = TARGET_SIGNAL_TRAP; /* XXX for now */
+#if 0
{
unsigned long ecr, der;
- ecr = wiggler_read_bdm_register (148); /* Read the exception cause register */
- der = wiggler_read_bdm_register (149); /* Read the debug enables register */
+ ecr = ocd_read_bdm_register (148); /* Read the exception cause register */
+ der = ocd_read_bdm_register (149); /* Read the debug enables register */
fprintf_unfiltered (gdb_stdout, "ecr = 0x%x, der = 0x%x\n", ecr, der);
}
+#endif
- return inferior_pid;
+ return inferior_ptid;
}
\f
-static int bdm_regmap[] = {BDM_REGMAP};
+static int bdm_regmap[] =
+{BDM_REGMAP};
/* Read the remote registers into regs.
+ Fetch register REGNO, or all registers if REGNO == -1
The Wiggler uses the following codes to access the registers:
- 0 -> 1023 SPR 0 -> 1023
- 0 - SPR 0 - MQ
- 1 - SPR 1 - XER
- 8 - SPR 8 - LR
- 9 - SPR 9 - CTR (known as cnt in GDB)
- 26 - SPR 26 - SRR0 - pc
- 1024 -> 2047 DCR 0 -> DCR 1023 (IBM PPC 4xx only)
- 2048 -> 2079 R0 -> R31
- 2080 -> 2143 FP0 -> FP31 (64 bit regs)
- 2144 CR (known as cnd in GDB)
- 2145 FPCSR
- 2146 MSR (known as ps in GDB)
+ 0 -> 1023 SPR 0 -> 1023
+ 0 - SPR 0 - MQ
+ 1 - SPR 1 - XER
+ 8 - SPR 8 - LR
+ 9 - SPR 9 - CTR (known as cnt in GDB)
+ 26 - SPR 26 - SRR0 - pc
+ 1024 -> 2047 DCR 0 -> DCR 1023 (IBM PPC 4xx only)
+ 2048 -> 2079 R0 -> R31
+ 2080 -> 2143 FP0 -> FP31 (64 bit regs) (IBM PPC 5xx only)
+ 2144 CR (known as cnd in GDB)
+ 2145 FPCSR
+ 2146 MSR (known as ps in GDB)
*/
static void
-bdm_ppc_fetch_registers (regno)
- int regno;
+bdm_ppc_fetch_registers (int regno)
{
int i;
- unsigned char *regs;
+ unsigned char *regs, *beginregs, *endregs, *almostregs;
+ unsigned char midregs[32];
+ unsigned char mqreg[1];
int first_regno, last_regno;
int first_bdm_regno, last_bdm_regno;
- int reglen;
+ int reglen, beginreglen, endreglen;
+
+#if 1
+ for (i = 0; i < (FPLAST_REGNUM - FP0_REGNUM + 1); i++)
+ {
+ midregs[i] = -1;
+ }
+ mqreg[0] = -1;
+#endif
if (regno == -1)
{
first_regno = regno;
last_regno = regno;
- first_bdm_regno = bdm_regmap [regno];
- last_bdm_regno = bdm_regmap [regno];
+ first_bdm_regno = bdm_regmap[regno];
+ last_bdm_regno = bdm_regmap[regno];
}
if (first_bdm_regno == -1)
return; /* Unsupported register */
}
- regs = wiggler_read_bdm_registers (first_bdm_regno, last_bdm_regno, ®len);
+#if 1
+ /* Can't ask for floating point regs on ppc 8xx, also need to
+ avoid asking for the mq register. */
+ if (first_regno == last_regno) /* only want one reg */
+ {
+/* printf("Asking for register %d\n", first_regno); */
+
+ /* if asking for an invalid register */
+ if ((first_regno == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
+ || (first_regno == gdbarch_tdep (current_gdbarch)->ppc_fpscr_regnum)
+ || ((first_regno >= FP0_REGNUM) && (first_regno <= FPLAST_REGNUM)))
+ {
+/* printf("invalid reg request!\n"); */
+ supply_register (first_regno, NULL);
+ return; /* Unsupported register */
+ }
+ else
+ {
+ regs = ocd_read_bdm_registers (first_bdm_regno,
+ last_bdm_regno, ®len);
+ }
+ }
+ else
+ /* want all regs */
+ {
+/* printf("Asking for registers %d to %d\n", first_regno, last_regno); */
+ beginregs = ocd_read_bdm_registers (first_bdm_regno,
+ FP0_REGNUM - 1, &beginreglen);
+ endregs = (strcat (midregs,
+ ocd_read_bdm_registers (FPLAST_REGNUM + 1,
+ last_bdm_regno - 1, &endreglen)));
+ almostregs = (strcat (beginregs, endregs));
+ regs = (strcat (almostregs, mqreg));
+ reglen = beginreglen + 32 + endreglen + 1;
+ }
+
+#endif
+#if 0
+ regs = ocd_read_bdm_registers (first_bdm_regno, last_bdm_regno, ®len);
+#endif
for (i = first_regno; i <= last_regno; i++)
{
int bdm_regno, regoffset;
- bdm_regno = bdm_regmap [i];
+ bdm_regno = bdm_regmap[i];
if (bdm_regno != -1)
{
regoffset = bdm_regno - first_bdm_regno;
supply_register (i, regs + 4 * regoffset);
}
else
- supply_register (i, NULL); /* Unsupported register */
+ supply_register (i, NULL); /* Unsupported register */
}
}
of REGISTERS. FIXME: ignores errors. */
static void
-bdm_ppc_store_registers (regno)
- int regno;
+bdm_ppc_store_registers (int regno)
{
int i;
int first_regno, last_regno;
first_regno = regno;
last_regno = regno;
- first_bdm_regno = bdm_regmap [regno];
- last_bdm_regno = bdm_regmap [regno];
+ first_bdm_regno = bdm_regmap[regno];
+ last_bdm_regno = bdm_regmap[regno];
}
if (first_bdm_regno == -1)
{
int bdm_regno;
- bdm_regno = bdm_regmap [i];
+ bdm_regno = bdm_regmap[i];
- wiggler_write_bdm_registers (bdm_regno, registers + REGISTER_BYTE (i), 4);
+ /* only attempt to write if it's a valid ppc 8xx register */
+ /* (need to avoid FP regs and MQ reg) */
+ if ((i != gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
+ && (i != gdbarch_tdep (current_gdbarch)->ppc_fpscr_regnum)
+ && ((i < FP0_REGNUM) || (i > FPLAST_REGNUM)))
+ {
+/* printf("write valid reg %d\n", bdm_regno); */
+ ocd_write_bdm_registers (bdm_regno, deprecated_registers + REGISTER_BYTE (i), 4);
+ }
+/*
+ else if (i == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
+ printf("don't write invalid reg %d (PPC_MQ_REGNUM)\n", bdm_regno);
+ else
+ printf("don't write invalid reg %d\n", bdm_regno);
+ */
}
}
\f
/* Define the target subroutine names */
-struct target_ops bdm_ppc_ops = {
- "wiggler", /* to_shortname */
- "", /* to_longname */
- "", /* to_doc */
- bdm_ppc_open, /* to_open */
- wiggler_close, /* to_close */
- NULL, /* to_attach */
- wiggler_detach, /* to_detach */
- wiggler_resume, /* to_resume */
- bdm_ppc_wait, /* to_wait */
- bdm_ppc_fetch_registers, /* to_fetch_registers */
- bdm_ppc_store_registers, /* to_store_registers */
- wiggler_prepare_to_store, /* to_prepare_to_store */
- wiggler_xfer_memory, /* to_xfer_memory */
- wiggler_files_info, /* to_files_info */
- memory_insert_breakpoint, /* to_insert_breakpoint */
- memory_remove_breakpoint, /* to_remove_breakpoint */
- NULL, /* to_terminal_init */
- NULL, /* to_terminal_inferior */
- NULL, /* to_terminal_ours_for_output */
- NULL, /* to_terminal_ours */
- NULL, /* to_terminal_info */
- wiggler_kill, /* to_kill */
- wiggler_load, /* to_load */
- NULL, /* to_lookup_symbol */
- wiggler_create_inferior, /* to_create_inferior */
- wiggler_mourn, /* to_mourn_inferior */
- 0, /* to_can_run */
- 0, /* to_notice_signals */
- wiggler_thread_alive, /* to_thread_alive */
- wiggler_stop, /* to_stop */
- process_stratum, /* to_stratum */
- NULL, /* to_next */
- 1, /* to_has_all_memory */
- 1, /* to_has_memory */
- 1, /* to_has_stack */
- 1, /* to_has_registers */
- 1, /* to_has_execution */
- NULL, /* sections */
- NULL, /* sections_end */
- OPS_MAGIC /* to_magic */
-};
+struct target_ops bdm_ppc_ops;
+
+static void
+init_bdm_ppc_ops (void)
+{
+ bdm_ppc_ops.to_shortname = "ocd";
+ bdm_ppc_ops.to_longname = "Remote target with On-Chip Debugging";
+ bdm_ppc_ops.to_doc = "Use a remote target with On-Chip Debugging. To use a target box;\n\
+specify the serial device it is connected to (e.g. /dev/ttya). To use\n\
+a wiggler, specify wiggler and then the port it is connected to\n\
+(e.g. wiggler lpt1)."; /* to_doc */
+ bdm_ppc_ops.to_open = bdm_ppc_open;
+ bdm_ppc_ops.to_close = ocd_close;
+ bdm_ppc_ops.to_detach = ocd_detach;
+ bdm_ppc_ops.to_resume = ocd_resume;
+ bdm_ppc_ops.to_wait = bdm_ppc_wait;
+ bdm_ppc_ops.to_fetch_registers = bdm_ppc_fetch_registers;
+ bdm_ppc_ops.to_store_registers = bdm_ppc_store_registers;
+ bdm_ppc_ops.to_prepare_to_store = ocd_prepare_to_store;
+ bdm_ppc_ops.to_xfer_memory = ocd_xfer_memory;
+ bdm_ppc_ops.to_files_info = ocd_files_info;
+ bdm_ppc_ops.to_insert_breakpoint = ocd_insert_breakpoint;
+ bdm_ppc_ops.to_remove_breakpoint = ocd_remove_breakpoint;
+ bdm_ppc_ops.to_kill = ocd_kill;
+ bdm_ppc_ops.to_load = ocd_load;
+ bdm_ppc_ops.to_create_inferior = ocd_create_inferior;
+ bdm_ppc_ops.to_mourn_inferior = ocd_mourn;
+ bdm_ppc_ops.to_thread_alive = ocd_thread_alive;
+ bdm_ppc_ops.to_stop = ocd_stop;
+ bdm_ppc_ops.to_stratum = process_stratum;
+ bdm_ppc_ops.to_has_all_memory = 1;
+ bdm_ppc_ops.to_has_memory = 1;
+ bdm_ppc_ops.to_has_stack = 1;
+ bdm_ppc_ops.to_has_registers = 1;
+ bdm_ppc_ops.to_has_execution = 1;
+ bdm_ppc_ops.to_magic = OPS_MAGIC;
+} /* init_bdm_ppc_ops */
+
+extern initialize_file_ftype _initialize_bdm_ppc; /* -Wmissing-prototypes */
void
-_initialize_bdm_ppc ()
+_initialize_bdm_ppc (void)
{
+ init_bdm_ppc_ops ();
add_target (&bdm_ppc_ops);
}
projects / deliverable / binutils-gdb.git / blobdiff